The first ionization energies of the given halogen atoms and the electronegativity of the fluorine tom has been given. The electronegativity values for the given halogens, with respect to the given formula, are to be calculated. These values need to be further compared with the stated electronegativity values for the given compounds. Concept introduction: Electronegativity can be defined as the measure of the tendency of an electron to attract the shared pair of electrons towards itself. It is directly proportional to the difference between the ionization energy and the electron affinity value for any given case. To determine: The electronegativity values of the given halogens; a comparison of these values with the values in the text.
The first ionization energies of the given halogen atoms and the electronegativity of the fluorine tom has been given. The electronegativity values for the given halogens, with respect to the given formula, are to be calculated. These values need to be further compared with the stated electronegativity values for the given compounds. Concept introduction: Electronegativity can be defined as the measure of the tendency of an electron to attract the shared pair of electrons towards itself. It is directly proportional to the difference between the ionization energy and the electron affinity value for any given case. To determine: The electronegativity values of the given halogens; a comparison of these values with the values in the text.
Solution Summary: The author defines electronegativity as the tendency of an electron to attract the shared pair of electrons towards itself.
Definition Definition Change in energy of a neutral gaseous atom when an electron is added to the atom to form a negative ion.
Chapter 3, Problem 148CP
Interpretation Introduction
Interpretation: The first ionization energies of the given halogen atoms and the electronegativity of the fluorine tom has been given. The electronegativity values for the given halogens, with respect to the given formula, are to be calculated. These values need to be further compared with the stated electronegativity values for the given compounds.
Concept introduction: Electronegativity can be defined as the measure of the tendency of an electron to attract the shared pair of electrons towards itself. It is directly proportional to the difference between the ionization energy and the electron affinity value for any given case.
To determine: The electronegativity values of the given halogens; a comparison of these values with the values in the text.
4.
a) Give a suitable rationale for the following cyclization, stating the type of process involved
(e.g. 9-endo-dig), clearly showing the mechanistic details at each step.
H
CO₂Me
1) NaOMe
2) H3O®
CO₂Me
2. Platinum and other group 10 metals often act as solid phase hydrogenation catalysts for
unsaturated hydrocarbons such as propylene, CH3CHCH2. In order for the reaction to be
catalyzed the propylene molecules must first adsorb onto the surface. In order to completely
cover the surface of a piece of platinum that has an area of 1.50 cm² with propylene, a total
of 3.45 x 10¹7 molecules are needed. Determine the mass of the propylene molecules that
have been absorbed onto the platinum surface.
Chem 141, Dr. Haefner
2. (a) Many main group oxides form acidic solutions when added to water. For example solid
tetraphosphorous decaoxide reacts with water to produce phosphoric acid. Write a balanced
chemical equation for this reaction.
(b) Calcium phosphate reacts with silicon dioxide and carbon graphite at elevated temperatures
to produce white phosphorous (P4) as a gas along with calcium silicate (Silcate ion is SiO3²-)
and carbon monoxide. Write a balanced chemical equation for this reaction.
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